891bacaf3c320097e61e4fca31c68cabf8d6037e73703dd94c4e0b7288d2dd10

Analysis

max time kernel
43s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 14:34

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General

Target

39ffed695539f79390ddf4ae7c8b238e.dll
Size

23KB
MD5

39ffed695539f79390ddf4ae7c8b238e
SHA1

12f983290712cd8bd6ca8cc996aa81931088b6d2
SHA256

891bacaf3c320097e61e4fca31c68cabf8d6037e73703dd94c4e0b7288d2dd10
SHA512

2f84bf88641182d0df1e7ac01f856384c12ec794b5892e9e503c6516f497d40ca7660a423b2c54bdce33933d22a3492162d629c244ca11a9e4cbc22d2f30bd5d
SSDEEP

384:PlgR1zraWaA00aaifWwgjmLePRwB6nMrjHHTmIyWt6FNIzjBIgcxRfWRhXff79BF:ejzmWa5aifWwgSLeP+cMrbzmHc6FNIz5

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
4380	rundll32.exe
4380	rundll32.exe
4692	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\ssqPjjGW.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ssqPjjGW.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ssqPjjGW.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FFE90FB-0431-4ED5-AF76-8BF8AE7E0B35}\InprocServer32\ = "C:\\Windows\\SysWow64\\ssqPjjGW.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FFE90FB-0431-4ED5-AF76-8BF8AE7E0B35}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FFE90FB-0431-4ED5-AF76-8BF8AE7E0B35}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FFE90FB-0431-4ED5-AF76-8BF8AE7E0B35}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
4380	rundll32.exe
4380	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe
4692	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4380	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4380	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4380	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3864 wrote to memory of 4380	3864	rundll32.exe	34
PID 3864 wrote to memory of 4380	3864	rundll32.exe	34
PID 3864 wrote to memory of 4380	3864	rundll32.exe	34
PID 4380 wrote to memory of 616	4380	rundll32.exe	83
PID 4380 wrote to memory of 4692	4380	rundll32.exe	100
PID 4380 wrote to memory of 4692	4380	rundll32.exe	100
PID 4380 wrote to memory of 4692	4380	rundll32.exe	100

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\39ffed695539f79390ddf4ae7c8b238e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3864
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\39ffed695539f79390ddf4ae7c8b238e.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4380
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\ssqPjjGW.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:4692

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ssqPjjGW.dll

Filesize
23KB

MD5
39ffed695539f79390ddf4ae7c8b238e

SHA1
12f983290712cd8bd6ca8cc996aa81931088b6d2

SHA256
891bacaf3c320097e61e4fca31c68cabf8d6037e73703dd94c4e0b7288d2dd10

SHA512
2f84bf88641182d0df1e7ac01f856384c12ec794b5892e9e503c6516f497d40ca7660a423b2c54bdce33933d22a3492162d629c244ca11a9e4cbc22d2f30bd5d

Download Submit
memory/4380-0-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4380-1-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4380-8-0x00000000006C0000-0x00000000006D2000-memory.dmp

Filesize
72KB

Download
memory/4692-15-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4692-16-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download